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Revert "Do not hash leading zero bytes of i64 numbers in Sip128 hasher"

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This commit is contained in:
Jakub Beránek 2022-01-17 21:26:04 +01:00
parent 42313dd29b
commit 50f8062316
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GPG key ID: DBC553E540C2F619
4 changed files with 8 additions and 22 deletions
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18
compiler/rustc_data_structures/src/sip128.rs
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@ -409,20 +409,6 @@ impl SipHasher128 {
}
}
macro_rules! dispatch_value {
($target: expr, $value:expr) => {
let value = $value;
#[allow(unreachable_patterns)]
#[allow(overflowing_literals)]
match value {
0..=0xFF => $target.short_write(value as u8),
0x100..=0xFFFF => $target.short_write(value as u16),
0x10000..=0xFFFFFFFF => $target.short_write(value as u32),
_ => $target.short_write(value as u64),
}
};
}
impl Hasher for SipHasher128 {
#[inline]
fn write_u8(&mut self, i: u8) {
@ -436,7 +422,7 @@ impl Hasher for SipHasher128 {
#[inline]
fn write_u32(&mut self, i: u32) {
dispatch_value!(self, i);
self.short_write(i);
}
#[inline]
@ -466,7 +452,7 @@ impl Hasher for SipHasher128 {
#[inline]
fn write_i64(&mut self, i: i64) {
dispatch_value!(self, i as u64);
self.short_write(i as u64);
}
#[inline]